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Glossary. 



Node. The place on a stem where the leaves 

 appear. 



Nodose. Knotty. 



Nut. A hard 1-celled, 1 -seeded indehiscent 

 fruit. 



Nutlet. Diminutive of nut. 



Obconic. Inversely conical. 



Obcordate. Inversely heart-shaped. 



Oblanceolate. Inversely lanceolate, i. e., 

 broader towards the apex. 



Oblique. Slanting or with unequal sides. 



Oblong. Longer than broad, with sides ap- 

 proximately parallel. 



Obovate. The inverse of ovate, i. e., broader 

 towards the apex. 



Obovoid. The inverse of ovoid. 



Obtuse. Bluntly pointed; greater than right 

 angle. 



Opposite. Said of leaves or leaflets arranged 

 in pairs on opposite sides. 



Orbicular. Circular. 



Orthotropovis. Descriptive of a straight 

 erect ovule with hilum at one end and 

 micropyle at tlie other. 



Oval. Broadly ellipti-c-al. 



Ovary. The ovule-bearing portion of a pistil. 



Ovate. Applied to leaves, etc., which are egg- 

 shaped in outline, broader towards base. 



Ovoid. Egg-shaped, applied to solids. 



Ovule. The embryonic seed. 



Ovuliferous. Bearing ovules. 



Palmate. Hand-shaped, with lobes or leaflets 

 radiating from apex of petiole like fingers. 



Panicle. A compound raceme. 



Paniculate. Arranged in panicles. 



Papilionaceous. Buttertly-like, descriptive of 

 flowers of the Pea family. 



Papillose. Rougli with minute blunt projec- 

 tions. 



Parietal. Pertaining to the wall, as of an 

 ovary. 



Parted. Divided but not entirely to base. 



Pectinate. Pinnatifid with narrow close 

 comb-like teeth. 



Pedicel. The stalk of a single flower in a 

 flower-cluster. 



Pedicellate. Borne on a pedicel. 



Peduncle. The stalk of a flower-cluster or cf 

 a solitary flower. 



Pedunculate. Borne on a peduncle. 



Peltate. Shield-shaped. A flat organ at- 

 tached by a central stem. 



Perennial. Lasting from year to year. 



Perfect. Said of flowers which have both 

 stamens and pistil. 



Perfoliate. Said of leaves through which the 

 stems seem to pass. 



Perianth. The calyx and corolla of a flower 

 collectively. 



Pericarp. The matured wall of an ovary. 



PerigA'nous. Said of an ovary united with 

 the perianth a portion of its length. 



Persistent. Remaining long attached to the 

 organs supporting them; as leaves attached 

 over winter, or calyx-lobes after the flower- 

 ing season. 



Petal. One of the divisions of a corolla. 



Petaloid. Resembling or colored like a petal. 



Petiolate. Having a petiole. 



Petiole. The stalk or stem of a leaf. 



Petiolulate. Having a petioule. 



Petioule. The stalk of a leaflet. 



Phyllodium. A specialized petiole resembling 

 or performing functions of a leaf. 



Pilose. Hairy with long soft hairs. 



Pinna, (pi. Pinnje) One of the first divisions 

 of a bipinnately compound leaf. 



Pinnate. Said of compound leaves with leaf- 

 lets arranged on opposite sides of a stem — • 

 the rachis. 



Pinnatifid. Pinnately c.eft to the middle or 

 farther. 



Pinnule. A secondary pinna. 



Pistil. The centi'al organ of a perfect flower 

 in which the seeds are produced. 



Pistillate. Provided with a pistil. 



Placenta. The portion of the interior of an 

 ovule which bears the ovules. 



Plicate. Said of leaves folded or plaited 

 (like a fan) in the bud. 



Plumule. The bud or terminal of an embryo. 



Pollen. The fertilizing grains or element of 

 the stamen. 



Polliniferous. Bearing pollen. 



Polygamous. Bearing both perfect and im- 

 perfect flowers. 



Polypetalous. Having separate petals. 



Pome. A fleshy fruit resulting from the de- 

 velopment of an ovary and an adnate 

 calyx-tube, as the apple. 



Posterior. Said of the side of an axillary 

 flower towards the axis. 



Prickle. A small spine growing out from the 

 bark. 



Procumbent. Trailing or resting on tlie 

 ground. 



Puberulent or Puberulous. ^Yith very short 

 fine hairs. 



Pubescent. Covered with short soft hairs, 

 i. e., pubescence. 



Pulvinate. Cushion-shaped. 



Punctate. Bearing translucent or colored 

 dots or pits. 



Punctulate. Minutely punctate. 



Putamen. The hard part of a stone-fruit; a 

 pit. 



Raceme. A form of flower-cluster where the 

 flowers are arranged with pedicels of about 

 equal length on an elongated axis, as in the 

 currant. 



Racemose. In racemes. 



Rachis. The central axis of a compound leaf 

 or of a spike or raceme of flowers 



Radial. Said of a longitudinal section of a 

 stem when on the radius. 



Radicle. The portion of an embryo below the 

 cotyledons. 



Ramification. Branching. 



Ray. A branch of an umbel ; also the mar- 

 ginal flowers of an inflorescence when dis- 

 tinct from the inner flowers. 

 Receptacle. The portion of a flower bearing 



tne sepals, petals, etc. 

 Recurved. Curved backward. 

 Reflexed. Bent abruptly backward. 

 Reniform. Kidney-shaped. 



